Paper holder for draftsmen



jufiy m, 1951 J. w. WILT PAPER HOLDER FOR DRAFTSMEN Filed Sept. 16, 1946 INVENTORT ATTOPNEK Patented July 10, 1951 UNITED STATES PATENT OFFICE 2,559,744 rArER HOLDER R DRAFTSME James W. Wilt, Taft, Calif. Applica ion p em r 16, 1946, e i l .No. 697,260

3 Claims. 1

The present invention relates to an adhesive tool or appliance for holding a sheet of paper on a drawing board or other flat surface.

The principal object of the invention is to provide a convenient appliance, for use primarily by draftsmen, for the purpose of temporarily attaching the edges of a sheet of drawing or tracing paper to the surface of a drawing board or table, or to an underlying sheet of drawing or map.

Another object is to provide an attaching appliance or holder which will not mar the surfaces to which it is applied. In many cases, particularly in tracing, the use of thumb tacks is undesirable or impossible, such for example as when worlring on a transparent tracing table, or on a glass or highly finished desk top without a drawing board, or when tracing from a wail map, or when making a tracing of a portion of a large drawing or map. In such cases, the draftsman customarily uses paper weights, which may allow the tracing to slip, or patches of adhesive tape, which are hard to remove.

Further objects of the invention are to provide a holder which is easy to remove from the drawing paper and board, which can be used repeatedly until its adhesive element is worn out, and in which the adhesive element can be quickly and easily replaced.

Other objects and advantages of the invention will become apparent from the following description which should be read with the understanding that changes, within the scope of the claims hereto appended, may be made in the form, construction and arrangement of the several parts without departing from the spirit of the invention as defined in said claims.

Reference will be made to the accompanying drawings in which 'Fig. l is a perspective view of a preferred embodiment of the invention showing the three elements thereof disassembled.

Fig. 2 is a vertical section of the same showing the elements assembled.

Fig. 3 is a perspective view of a modified form of the invention with the adhesive element omitted.

Fig. 4 is a vertical section of the parts shown in Fig. 3 with the adhesive element in place.

In the drawings, and referring for the moment to Figs. 1 and 2 thereof, the reference numeral 5 designates a rectangular and preferably square block of resilient or elastic material such as rubber, having a flat bottom surface 6 and substantially vertical and parallel sides I, which constitutes the central portion of the holder. The

corners where the sides meet the bottom are preferably rounded, as shown at 8. A lateral flange 9 near the top of the block or central portion projects outwardly beyond the planes of the sides 1.

A rectangular frame it of inelastic material, whose four sides constitute side portions of the holder, has interior dimensions very slightly larger than the exterior dimensions of the lower portion of the block 5, so that it fits over the sides 1 and abuts against the bottom of the projecting flange 9. The height of the frame I0 is materially less than the vertical distance between the bottom of the block and the bottom of the flange 9, so that no portion of the frame it) can touch the surface on which the block rests.

A sheet or strip ll of thin flexible material, coated with non-drying adhesive on its lower surface, {is placed beneath the bottom of the block or central portion 5, and its ends I2 are brought up against the sides 1 of the block and turned outwardly at the flange 9. The frame It is then brought upwardly around the lower portion of the block and the sheet II which lies beneath and against the sides thereof, thereby clamping the adhesive sheet around and against the bottom of the block, as shown in Fig. 2.. The width of the adhesive sheet II is the same as the width of the lower portion of the block.

When assembled, as shown in Fig. 2, my holder constitutes a block-like appliance having a flat adhesive bottom. In using it, it is pressed down firmly on the drawing board or table or on the underlying drawing or map as the case may be, with a portion of its bottom overlapping the edge of the superposed tracing paper. The flat adhesive bottom of the device adheres to both the paper and the exposed surface of the underlying board or drawing, and thereby securely holds the paper in place.

The holder may be removed from the surfaces to which it adheres simply by lifting it up carefully. The fit of the frame [9 about the lower in Figs. 3 and 4, comprises a block having a central portion 1 3 of resilient or elastic material provided with a flat lower surface l4 and substantially vertical parallel sides I5. A pair of arms or wings l6, constituting side portions of the holder, are formed integrally with the central portion l3 at one end and are spaced from the sides l5 by narrow slots l'l. The adhesive element l is the same as in the previously described form of the invention and consists of a strip or sheet of thin flexible tape having adhesive applied to its lower surface. The adhesive element is fitted under the bottom of the block l3, and its ends are brought up through the slots H, as shown in Fig. 4.

The adhesive outer surfaces of the upstanding end portions of the strip I I are caused to adhere to the inside surfaces of the wings [6 by squeezing said wings against the sides of the central portion of the block, thereby holding the adhesive element in place against the bottom and sides of the central portion of the block. This form of holder is used in the same manner as the previously described form. The adhesive element can be replaced by spreading the Wings 16 apart to widen the slots H and release the ends of said adhesive element.

I claim:

1. Means for temporarily attaching a sheet of paper to a flat surface comprising a holder formed of resilient elastic material and having a blocklike central portion with a flat horizontal bottom and the sides rising therefrom, said holder having wings integral at one end therewith and positioned adjacent to two opposite sides thereof,

and a piece of flexible tape having a non-drying adhesive lower surface lying beneath the flat bottom of said central portion and having its ends bent upwardly between said sides and said wings.

2. Means for temporarily attaching a sheet of paper to a flat surface comprising a holder having a block-like elastic central portion and side portions, said central portion having a flat horizontal bottom and side rising vertically therefrom to form a block of sufficient vertical thickness whereby it may be lifted from a horizontal surface by grasping its vertical sides, said side portions lying adjacent to two opposite sides of said central portion, the bottomsof said side portions being above the plane of the bottom of said central portion, and a flexible sheet positioned beneath and in contact with the bottom of said central portion, said sheet having its lower surface coated with non-drying adhesive, and said sheet having its ends turned upwardly and removably positioned between said side portions and the sides of said central portion.

3. Means for temporarily attaching a sheet of paper to a flat surface comprising an elastic holder having a fiat horizontal bottom and sides rising therefrom to form a block of sufficient thickness whereby it may be lifted from a horizontal surface by grasping its sides, flanges projecting outwardly from at least two opposite sides of said block near the top thereof, a removable frame having at least two spaced side portions fitted closely against the flanged sides of said block below said flanges, the bottom of said frame being above the bottom of said block, and a flexible sheet positioned beneath and in contact with the bottom of said block, said sheet having its lower surface coated with non-drying adhesive, and said sheet having its ends turned upwardly and removably clamped between the side portions of said frame and the sides of said block.

JAMES W. WILT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 298,124 Scribner May 6, 1884 388,555 Goodrich Aug. 28, 1388 413,798 Young Oct. 29, 1889 1,102,370 Wait July '7, 1914 1,836,542 Miller Dec. 15, 1931 2,292,024 Dreher Aug. 4, 1942 

